-24.76% is the change from 848 to 638
Calculation steps:
[( 638 - 848 ) ÷ 848] x 100 = -24.76%
Formula
Percentage change = [(638 - 848) / 848] x 100
Subtract the new number by the original number
638 - 848 = -210
-210 ÷ 848 = -0.24764150943396226
-0.24764150943396226 x 100 = -24.76%