870.37% is the change from 81 to 786
Calculation steps:
[( 786 - 81 ) ÷ 81] x 100 = 870.37%
Formula
Percentage change = [(786 - 81) / 81] x 100
Subtract the new number by the original number
786 - 81 = 705
705 ÷ 81 = 8.703703703703704
8.703703703703704 x 100 = 870.37%