-74.62% is the change from 851 to 216
Calculation steps:
[( 216 - 851 ) ÷ 851] x 100 = -74.62%
Formula
Percentage change = [(216 - 851) / 851] x 100
Subtract the new number by the original number
216 - 851 = -635
-635 ÷ 851 = -0.7461809635722679
-0.7461809635722679 x 100 = -74.62%