-72.76% is the change from 290 to 79
Calculation steps:
[( 79 - 290 ) ÷ 290] x 100 = -72.76%
Formula
Percentage change = [(79 - 290) / 290] x 100
Subtract the new number by the original number
79 - 290 = -211
-211 ÷ 290 = -0.7275862068965517
-0.7275862068965517 x 100 = -72.76%