-18.4% is the change from 625 to 510
Calculation steps:
[( 510 - 625 ) ÷ 625] x 100 = -18.4%
Formula
Percentage change = [(510 - 625) / 625] x 100
Subtract the new number by the original number
510 - 625 = -115
-115 ÷ 625 = -0.184
-0.184 x 100 = -18.4%