-24.46% is the change from 278 to 210
Calculation steps:
[( 210 - 278 ) ÷ 278] x 100 = -24.46%
Formula
Percentage change = [(210 - 278) / 278] x 100
Subtract the new number by the original number
210 - 278 = -68
-68 ÷ 278 = -0.2446043165467626
-0.2446043165467626 x 100 = -24.46%