16.8% is the change from 506 to 591
Calculation steps:
[( 591 - 506 ) ÷ 506] x 100 = 16.8%
Formula
Percentage change = [(591 - 506) / 506] x 100
Subtract the new number by the original number
591 - 506 = 85
85 ÷ 506 = 0.16798418972332016
0.16798418972332016 x 100 = 16.8%