-62.2% is the change from 209 to 79
Calculation steps:
[( 79 - 209 ) ÷ 209] x 100 = -62.2%
Formula
Percentage change = [(79 - 209) / 209] x 100
Subtract the new number by the original number
79 - 209 = -130
-130 ÷ 209 = -0.6220095693779905
-0.6220095693779905 x 100 = -62.2%