61.5% is the change from 613 to 990
Calculation steps:
[( 990 - 613 ) ÷ 613] x 100 = 61.5%
Formula
Percentage change = [(990 - 613) / 613] x 100
Subtract the new number by the original number
990 - 613 = 377
377 ÷ 613 = 0.6150081566068516
0.6150081566068516 x 100 = 61.5%