38.37% is the change from 615 to 851
Calculation steps:
[( 851 - 615 ) ÷ 615] x 100 = 38.37%
Formula
Percentage change = [(851 - 615) / 615] x 100
Subtract the new number by the original number
851 - 615 = 236
236 ÷ 615 = 0.383739837398374
0.383739837398374 x 100 = 38.37%