-68.81% is the change from 420 to 131
Calculation steps:
[( 131 - 420 ) ÷ 420] x 100 = -68.81%
Formula
Percentage change = [(131 - 420) / 420] x 100
Subtract the new number by the original number
131 - 420 = -289
-289 ÷ 420 = -0.6880952380952381
-0.6880952380952381 x 100 = -68.81%