-28.42% is the change from 936 to 670
Calculation steps:
[( 670 - 936 ) ÷ 936] x 100 = -28.42%
Formula
Percentage change = [(670 - 936) / 936] x 100
Subtract the new number by the original number
670 - 936 = -266
-266 ÷ 936 = -0.2841880341880342
-0.2841880341880342 x 100 = -28.42%