83.71% is the change from 491 to 902
Calculation steps:
[( 902 - 491 ) ÷ 491] x 100 = 83.71%
Formula
Percentage change = [(902 - 491) / 491] x 100
Subtract the new number by the original number
902 - 491 = 411
411 ÷ 491 = 0.8370672097759674
0.8370672097759674 x 100 = 83.71%