40.03% is the change from 612 to 857
Calculation steps:
[( 857 - 612 ) ÷ 612] x 100 = 40.03%
Formula
Percentage change = [(857 - 612) / 612] x 100
Subtract the new number by the original number
857 - 612 = 245
245 ÷ 612 = 0.40032679738562094
0.40032679738562094 x 100 = 40.03%