-87.1% is the change from 279 to 36
Calculation steps:
[( 36 - 279 ) ÷ 279] x 100 = -87.1%
Formula
Percentage change = [(36 - 279) / 279] x 100
Subtract the new number by the original number
36 - 279 = -243
-243 ÷ 279 = -0.8709677419354839
-0.8709677419354839 x 100 = -87.1%