-52.32% is the change from 667 to 318
Calculation steps:
[( 318 - 667 ) ÷ 667] x 100 = -52.32%
Formula
Percentage change = [(318 - 667) / 667] x 100
Subtract the new number by the original number
318 - 667 = -349
-349 ÷ 667 = -0.5232383808095952
-0.5232383808095952 x 100 = -52.32%