-2.44% is the change from 82 to 80
Calculation steps:
[( 80 - 82 ) ÷ 82] x 100 = -2.44%
Formula
Percentage change = [(80 - 82) / 82] x 100
Subtract the new number by the original number
80 - 82 = -2
-2 ÷ 82 = -0.024390243902439025
-0.024390243902439025 x 100 = -2.44%