57.17% is the change from 621 to 976
Calculation steps:
[( 976 - 621 ) ÷ 621] x 100 = 57.17%
Formula
Percentage change = [(976 - 621) / 621] x 100
Subtract the new number by the original number
976 - 621 = 355
355 ÷ 621 = 0.571658615136876
0.571658615136876 x 100 = 57.17%