40.26% is the change from 621 to 871
Calculation steps:
[( 871 - 621 ) ÷ 621] x 100 = 40.26%
Formula
Percentage change = [(871 - 621) / 621] x 100
Subtract the new number by the original number
871 - 621 = 250
250 ÷ 621 = 0.4025764895330113
0.4025764895330113 x 100 = 40.26%