-92.2% is the change from 846 to 66
Calculation steps:
[( 66 - 846 ) ÷ 846] x 100 = -92.2%
Formula
Percentage change = [(66 - 846) / 846] x 100
Subtract the new number by the original number
66 - 846 = -780
-780 ÷ 846 = -0.9219858156028369
-0.9219858156028369 x 100 = -92.2%