-66.54% is the change from 254 to 85
Calculation steps:
[( 85 - 254 ) ÷ 254] x 100 = -66.54%
Formula
Percentage change = [(85 - 254) / 254] x 100
Subtract the new number by the original number
85 - 254 = -169
-169 ÷ 254 = -0.6653543307086615
-0.6653543307086615 x 100 = -66.54%