50.24% is the change from 613 to 921
Calculation steps:
[( 921 - 613 ) ÷ 613] x 100 = 50.24%
Formula
Percentage change = [(921 - 613) / 613] x 100
Subtract the new number by the original number
921 - 613 = 308
308 ÷ 613 = 0.5024469820554649
0.5024469820554649 x 100 = 50.24%