33.01% is the change from 515 to 685
Calculation steps:
[( 685 - 515 ) ÷ 515] x 100 = 33.01%
Formula
Percentage change = [(685 - 515) / 515] x 100
Subtract the new number by the original number
685 - 515 = 170
170 ÷ 515 = 0.3300970873786408
0.3300970873786408 x 100 = 33.01%