31.87% is the change from 684 to 902
Calculation steps:
[( 902 - 684 ) ÷ 684] x 100 = 31.87%
Formula
Percentage change = [(902 - 684) / 684] x 100
Subtract the new number by the original number
902 - 684 = 218
218 ÷ 684 = 0.31871345029239767
0.31871345029239767 x 100 = 31.87%