-23.99% is the change from 667 to 507
Calculation steps:
[( 507 - 667 ) ÷ 667] x 100 = -23.99%
Formula
Percentage change = [(507 - 667) / 667] x 100
Subtract the new number by the original number
507 - 667 = -160
-160 ÷ 667 = -0.239880059970015
-0.239880059970015 x 100 = -23.99%