-74.59% is the change from 846 to 215
Calculation steps:
[( 215 - 846 ) ÷ 846] x 100 = -74.59%
Formula
Percentage change = [(215 - 846) / 846] x 100
Subtract the new number by the original number
215 - 846 = -631
-631 ÷ 846 = -0.7458628841607565
-0.7458628841607565 x 100 = -74.59%