39.05% is the change from 612 to 851
Calculation steps:
[( 851 - 612 ) ÷ 612] x 100 = 39.05%
Formula
Percentage change = [(851 - 612) / 612] x 100
Subtract the new number by the original number
851 - 612 = 239
239 ÷ 612 = 0.39052287581699346
0.39052287581699346 x 100 = 39.05%