-52.17% is the change from 667 to 319
Calculation steps:
[( 319 - 667 ) ÷ 667] x 100 = -52.17%
Formula
Percentage change = [(319 - 667) / 667] x 100
Subtract the new number by the original number
319 - 667 = -348
-348 ÷ 667 = -0.5217391304347826
-0.5217391304347826 x 100 = -52.17%