71.43% is the change from 308 to 528
Calculation steps:
[( 528 - 308 ) ÷ 308] x 100 = 71.43%
Formula
Percentage change = [(528 - 308) / 308] x 100
Subtract the new number by the original number
528 - 308 = 220
220 ÷ 308 = 0.7142857142857143
0.7142857142857143 x 100 = 71.43%