39.7% is the change from 597 to 834
Calculation steps:
[( 834 - 597 ) ÷ 597] x 100 = 39.7%
Formula
Percentage change = [(834 - 597) / 597] x 100
Subtract the new number by the original number
834 - 597 = 237
237 ÷ 597 = 0.3969849246231156
0.3969849246231156 x 100 = 39.7%