38.23% is the change from 620 to 857
Calculation steps:
[( 857 - 620 ) ÷ 620] x 100 = 38.23%
Formula
Percentage change = [(857 - 620) / 620] x 100
Subtract the new number by the original number
857 - 620 = 237
237 ÷ 620 = 0.38225806451612904
0.38225806451612904 x 100 = 38.23%