37.09% is the change from 612 to 839
Calculation steps:
[( 839 - 612 ) ÷ 612] x 100 = 37.09%
Formula
Percentage change = [(839 - 612) / 612] x 100
Subtract the new number by the original number
839 - 612 = 227
227 ÷ 612 = 0.3709150326797386
0.3709150326797386 x 100 = 37.09%