-18.17% is the change from 633 to 518
Calculation steps:
[( 518 - 633 ) ÷ 633] x 100 = -18.17%
Formula
Percentage change = [(518 - 633) / 633] x 100
Subtract the new number by the original number
518 - 633 = -115
-115 ÷ 633 = -0.18167456556082148
-0.18167456556082148 x 100 = -18.17%