-91.23% is the change from 855 to 75
Calculation steps:
[( 75 - 855 ) ÷ 855] x 100 = -91.23%
Formula
Percentage change = [(75 - 855) / 855] x 100
Subtract the new number by the original number
75 - 855 = -780
-780 ÷ 855 = -0.9122807017543859
-0.9122807017543859 x 100 = -91.23%