816.9% is the change from 71 to 651
Calculation steps:
[( 651 - 71 ) ÷ 71] x 100 = 816.9%
Formula
Percentage change = [(651 - 71) / 71] x 100
Subtract the new number by the original number
651 - 71 = 580
580 ÷ 71 = 8.169014084507042
8.169014084507042 x 100 = 816.9%