-89.98% is the change from 419 to 42
Calculation steps:
[( 42 - 419 ) ÷ 419] x 100 = -89.98%
Formula
Percentage change = [(42 - 419) / 419] x 100
Subtract the new number by the original number
42 - 419 = -377
-377 ÷ 419 = -0.8997613365155132
-0.8997613365155132 x 100 = -89.98%