198.57% is the change from 280 to 836
Calculation steps:
[( 836 - 280 ) ÷ 280] x 100 = 198.57%
Formula
Percentage change = [(836 - 280) / 280] x 100
Subtract the new number by the original number
836 - 280 = 556
556 ÷ 280 = 1.9857142857142858
1.9857142857142858 x 100 = 198.57%