50.33% is the change from 612 to 920
Calculation steps:
[( 920 - 612 ) ÷ 612] x 100 = 50.33%
Formula
Percentage change = [(920 - 612) / 612] x 100
Subtract the new number by the original number
920 - 612 = 308
308 ÷ 612 = 0.5032679738562091
0.5032679738562091 x 100 = 50.33%