Here are some numbers I ran for Paycoin for the Proof of Work period. It is now 100% Proof of Stake.
Many coins were mined by GAW Miners (private?) mining pool: https://chainz.cryptoid.info/xpy/address.dws?PRQBLgPak9i2xWsdFWSMQfWEA8yWqieTKo.htm (Click on show all transactions)
GAW Miners mined 1161 Proof of Work blocks with reward 49 XPY = Total 56,889 XPY
Block 1. 12 million premine.
Block 2 to 277. Block rewards 49. 13,475 XPY Total.
Block 278 to 399. 0 rewards. Network taken offline due to forks.
Block 400 to 7129. Block rewards 49. 329,721 XPY Total.
Block 7129. Last Proof of Work block with 49 XPY block reward.
Block 7130 to 7140. Block rewards of 0 before switching to Proof of Stake on Block 7141.
343,196 XPY mined during Proof of Work period.
343,196 - 56,889 = 286,307 XPY not mined by GAW Miners
12,343,196 XPY coins mined Total at the end of Proof of Work including pre-mine.
100 - (343196.0 / 12343196 * 100) = 97.22% Premined at the end of Proof of Work
Proof of Work reward code section: https://github.com/GAWMiners/paycoin/blob/v0.1.2.25/src/main.cpp#L937-L952