-95.68% is the change from 278 to 12
Calculation steps:
[( 12 - 278 ) ÷ 278] x 100 = -95.68%
Formula
Percentage change = [(12 - 278) / 278] x 100
Subtract the new number by the original number
12 - 278 = -266
-266 ÷ 278 = -0.9568345323741008
-0.9568345323741008 x 100 = -95.68%