-96.42% is the change from 279 to 10
Calculation steps:
[( 10 - 279 ) ÷ 279] x 100 = -96.42%
Formula
Percentage change = [(10 - 279) / 279] x 100
Subtract the new number by the original number
10 - 279 = -269
-269 ÷ 279 = -0.96415770609319
-0.96415770609319 x 100 = -96.42%