36.68% is the change from 597 to 816
Calculation steps:
[( 816 - 597 ) ÷ 597] x 100 = 36.68%
Formula
Percentage change = [(816 - 597) / 597] x 100
Subtract the new number by the original number
816 - 597 = 219
219 ÷ 597 = 0.36683417085427134
0.36683417085427134 x 100 = 36.68%