47.34% is the change from 621 to 915
Calculation steps:
[( 915 - 621 ) ÷ 621] x 100 = 47.34%
Formula
Percentage change = [(915 - 621) / 621] x 100
Subtract the new number by the original number
915 - 621 = 294
294 ÷ 621 = 0.47342995169082125
0.47342995169082125 x 100 = 47.34%