-71.01% is the change from 276 to 80
Calculation steps:
[( 80 - 276 ) ÷ 276] x 100 = -71.01%
Formula
Percentage change = [(80 - 276) / 276] x 100
Subtract the new number by the original number
80 - 276 = -196
-196 ÷ 276 = -0.7101449275362319
-0.7101449275362319 x 100 = -71.01%