71.99% is the change from 307 to 528
Calculation steps:
[( 528 - 307 ) ÷ 307] x 100 = 71.99%
Formula
Percentage change = [(528 - 307) / 307] x 100
Subtract the new number by the original number
528 - 307 = 221
221 ÷ 307 = 0.7198697068403909
0.7198697068403909 x 100 = 71.99%