-74.91% is the change from 279 to 70
Calculation steps:
[( 70 - 279 ) ÷ 279] x 100 = -74.91%
Formula
Percentage change = [(70 - 279) / 279] x 100
Subtract the new number by the original number
70 - 279 = -209
-209 ÷ 279 = -0.7491039426523297
-0.7491039426523297 x 100 = -74.91%