-87.97% is the change from 424 to 51
Calculation steps:
[( 51 - 424 ) ÷ 424] x 100 = -87.97%
Formula
Percentage change = [(51 - 424) / 424] x 100
Subtract the new number by the original number
51 - 424 = -373
-373 ÷ 424 = -0.8797169811320755
-0.8797169811320755 x 100 = -87.97%