36.18% is the change from 597 to 813
Calculation steps:
[( 813 - 597 ) ÷ 597] x 100 = 36.18%
Formula
Percentage change = [(813 - 597) / 597] x 100
Subtract the new number by the original number
813 - 597 = 216
216 ÷ 597 = 0.36180904522613067
0.36180904522613067 x 100 = 36.18%