-75.89% is the change from 423 to 102
Calculation steps:
[( 102 - 423 ) ÷ 423] x 100 = -75.89%
Formula
Percentage change = [(102 - 423) / 423] x 100
Subtract the new number by the original number
102 - 423 = -321
-321 ÷ 423 = -0.7588652482269503
-0.7588652482269503 x 100 = -75.89%