-55.84% is the change from 634 to 280
Calculation steps:
[( 280 - 634 ) ÷ 634] x 100 = -55.84%
Formula
Percentage change = [(280 - 634) / 634] x 100
Subtract the new number by the original number
280 - 634 = -354
-354 ÷ 634 = -0.5583596214511041
-0.5583596214511041 x 100 = -55.84%