943.21% is the change from 81 to 845
Calculation steps:
[( 845 - 81 ) ÷ 81] x 100 = 943.21%
Formula
Percentage change = [(845 - 81) / 81] x 100
Subtract the new number by the original number
845 - 81 = 764
764 ÷ 81 = 9.432098765432098
9.432098765432098 x 100 = 943.21%