62.3% is the change from 191 to 310
Calculation steps:
[( 310 - 191 ) ÷ 191] x 100 = 62.3%
Formula
Percentage change = [(310 - 191) / 191] x 100
Subtract the new number by the original number
310 - 191 = 119
119 ÷ 191 = 0.6230366492146597
0.6230366492146597 x 100 = 62.3%