30.91% is the change from 757 to 991
Calculation steps:
[( 991 - 757 ) ÷ 757] x 100 = 30.91%
Formula
Percentage change = [(991 - 757) / 757] x 100
Subtract the new number by the original number
991 - 757 = 234
234 ÷ 757 = 0.309114927344782
0.309114927344782 x 100 = 30.91%