-68.13% is the change from 251 to 80
Calculation steps:
[( 80 - 251 ) ÷ 251] x 100 = -68.13%
Formula
Percentage change = [(80 - 251) / 251] x 100
Subtract the new number by the original number
80 - 251 = -171
-171 ÷ 251 = -0.6812749003984063
-0.6812749003984063 x 100 = -68.13%