-84.16% is the change from 423 to 67
Calculation steps:
[( 67 - 423 ) ÷ 423] x 100 = -84.16%
Formula
Percentage change = [(67 - 423) / 423] x 100
Subtract the new number by the original number
67 - 423 = -356
-356 ÷ 423 = -0.8416075650118203
-0.8416075650118203 x 100 = -84.16%