70.32% is the change from 310 to 528
Calculation steps:
[( 528 - 310 ) ÷ 310] x 100 = 70.32%
Formula
Percentage change = [(528 - 310) / 310] x 100
Subtract the new number by the original number
528 - 310 = 218
218 ÷ 310 = 0.7032258064516129
0.7032258064516129 x 100 = 70.32%