85.11% is the change from 329 to 609
Calculation steps:
[( 609 - 329 ) ÷ 329] x 100 = 85.11%
Formula
Percentage change = [(609 - 329) / 329] x 100
Subtract the new number by the original number
609 - 329 = 280
280 ÷ 329 = 0.851063829787234
0.851063829787234 x 100 = 85.11%