1090.12% is the change from 81 to 964
Calculation steps:
[( 964 - 81 ) ÷ 81] x 100 = 1090.12%
Formula
Percentage change = [(964 - 81) / 81] x 100
Subtract the new number by the original number
964 - 81 = 883
883 ÷ 81 = 10.901234567901234
10.901234567901234 x 100 = 1090.12%