66.28% is the change from 596 to 991
Calculation steps:
[( 991 - 596 ) ÷ 596] x 100 = 66.28%
Formula
Percentage change = [(991 - 596) / 596] x 100
Subtract the new number by the original number
991 - 596 = 395
395 ÷ 596 = 0.662751677852349
0.662751677852349 x 100 = 66.28%