-74.71% is the change from 858 to 217
Calculation steps:
[( 217 - 858 ) ÷ 858] x 100 = -74.71%
Formula
Percentage change = [(217 - 858) / 858] x 100
Subtract the new number by the original number
217 - 858 = -641
-641 ÷ 858 = -0.747086247086247
-0.747086247086247 x 100 = -74.71%