52.53% is the change from 217 to 331
Calculation steps:
[( 331 - 217 ) ÷ 217] x 100 = 52.53%
Formula
Percentage change = [(331 - 217) / 217] x 100
Subtract the new number by the original number
331 - 217 = 114
114 ÷ 217 = 0.5253456221198156
0.5253456221198156 x 100 = 52.53%