70.07% is the change from 538 to 915
Calculation steps:
[( 915 - 538 ) ÷ 538] x 100 = 70.07%
Formula
Percentage change = [(915 - 538) / 538] x 100
Subtract the new number by the original number
915 - 538 = 377
377 ÷ 538 = 0.7007434944237918
0.7007434944237918 x 100 = 70.07%