821.57% is the change from 102 to 940
Calculation steps:
[( 940 - 102 ) ÷ 102] x 100 = 821.57%
Formula
Percentage change = [(940 - 102) / 102] x 100
Subtract the new number by the original number
940 - 102 = 838
838 ÷ 102 = 8.215686274509803
8.215686274509803 x 100 = 821.57%