-97.64% is the change from 423 to 10
Calculation steps:
[( 10 - 423 ) ÷ 423] x 100 = -97.64%
Formula
Percentage change = [(10 - 423) / 423] x 100
Subtract the new number by the original number
10 - 423 = -413
-413 ÷ 423 = -0.9763593380614657
-0.9763593380614657 x 100 = -97.64%