56.36% is the change from 621 to 971
Calculation steps:
[( 971 - 621 ) ÷ 621] x 100 = 56.36%
Formula
Percentage change = [(971 - 621) / 621] x 100
Subtract the new number by the original number
971 - 621 = 350
350 ÷ 621 = 0.5636070853462157
0.5636070853462157 x 100 = 56.36%