61.66% is the change from 613 to 991
Calculation steps:
[( 991 - 613 ) ÷ 613] x 100 = 61.66%
Formula
Percentage change = [(991 - 613) / 613] x 100
Subtract the new number by the original number
991 - 613 = 378
378 ÷ 613 = 0.6166394779771615
0.6166394779771615 x 100 = 61.66%
Example