35.97% is the change from 620 to 843
Calculation steps:
[( 843 - 620 ) ÷ 620] x 100 = 35.97%
Formula
Percentage change = [(843 - 620) / 620] x 100
Subtract the new number by the original number
843 - 620 = 223
223 ÷ 620 = 0.3596774193548387
0.3596774193548387 x 100 = 35.97%