-87.83% is the change from 419 to 51
Calculation steps:
[( 51 - 419 ) ÷ 419] x 100 = -87.83%
Formula
Percentage change = [(51 - 419) / 419] x 100
Subtract the new number by the original number
51 - 419 = -368
-368 ÷ 419 = -0.8782816229116945
-0.8782816229116945 x 100 = -87.83%