-4.96% is the change from 423 to 402
Calculation steps:
[( 402 - 423 ) ÷ 423] x 100 = -4.96%
Formula
Percentage change = [(402 - 423) / 423] x 100
Subtract the new number by the original number
402 - 423 = -21
-21 ÷ 423 = -0.04964539007092199
-0.04964539007092199 x 100 = -4.96%