-23.24% is the change from 667 to 512
Calculation steps:
[( 512 - 667 ) ÷ 667] x 100 = -23.24%
Formula
Percentage change = [(512 - 667) / 667] x 100
Subtract the new number by the original number
512 - 667 = -155
-155 ÷ 667 = -0.23238380809595202
-0.23238380809595202 x 100 = -23.24%