-68.5% is the change from 254 to 80
Calculation steps:
[( 80 - 254 ) ÷ 254] x 100 = -68.5%
Formula
Percentage change = [(80 - 254) / 254] x 100
Subtract the new number by the original number
80 - 254 = -174
-174 ÷ 254 = -0.6850393700787402
-0.6850393700787402 x 100 = -68.5%