-48.59% is the change from 778 to 400
Calculation steps:
[( 400 - 778 ) ÷ 778] x 100 = -48.59%
Formula
Percentage change = [(400 - 778) / 778] x 100
Subtract the new number by the original number
400 - 778 = -378
-378 ÷ 778 = -0.48586118251928023
-0.48586118251928023 x 100 = -48.59%