31.18% is the change from 587 to 770
Calculation steps:
[( 770 - 587 ) ÷ 587] x 100 = 31.18%
Formula
Percentage change = [(770 - 587) / 587] x 100
Subtract the new number by the original number
770 - 587 = 183
183 ÷ 587 = 0.31175468483816016
0.31175468483816016 x 100 = 31.18%