-21.99% is the change from 846 to 660
Calculation steps:
[( 660 - 846 ) ÷ 846] x 100 = -21.99%
Formula
Percentage change = [(660 - 846) / 846] x 100
Subtract the new number by the original number
660 - 846 = -186
-186 ÷ 846 = -0.2198581560283688
-0.2198581560283688 x 100 = -21.99%