161.25% is the change from 320 to 836
Calculation steps:
[( 836 - 320 ) ÷ 320] x 100 = 161.25%
Formula
Percentage change = [(836 - 320) / 320] x 100
Subtract the new number by the original number
836 - 320 = 516
516 ÷ 320 = 1.6125
1.6125 x 100 = 161.25%