-74.94% is the change from 850 to 213
Calculation steps:
[( 213 - 850 ) ÷ 850] x 100 = -74.94%
Formula
Percentage change = [(213 - 850) / 850] x 100
Subtract the new number by the original number
213 - 850 = -637
-637 ÷ 850 = -0.7494117647058823
-0.7494117647058823 x 100 = -74.94%