55.59% is the change from 331 to 515
Calculation steps:
[( 515 - 331 ) ÷ 331] x 100 = 55.59%
Formula
Percentage change = [(515 - 331) / 331] x 100
Subtract the new number by the original number
515 - 331 = 184
184 ÷ 331 = 0.5558912386706949
0.5558912386706949 x 100 = 55.59%