64.02% is the change from 189 to 310
Calculation steps:
[( 310 - 189 ) ÷ 189] x 100 = 64.02%
Formula
Percentage change = [(310 - 189) / 189] x 100
Subtract the new number by the original number
310 - 189 = 121
121 ÷ 189 = 0.6402116402116402
0.6402116402116402 x 100 = 64.02%