1037.04% is the change from 81 to 921
Calculation steps:
[( 921 - 81 ) ÷ 81] x 100 = 1037.04%
Formula
Percentage change = [(921 - 81) / 81] x 100
Subtract the new number by the original number
921 - 81 = 840
840 ÷ 81 = 10.37037037037037
10.37037037037037 x 100 = 1037.04%