1023.46% is the change from 81 to 910
Calculation steps:
[( 910 - 81 ) ÷ 81] x 100 = 1023.46%
Formula
Percentage change = [(910 - 81) / 81] x 100
Subtract the new number by the original number
910 - 81 = 829
829 ÷ 81 = 10.234567901234568
10.234567901234568 x 100 = 1023.46%