-77.07% is the change from 423 to 97
Calculation steps:
[( 97 - 423 ) ÷ 423] x 100 = -77.07%
Formula
Percentage change = [(97 - 423) / 423] x 100
Subtract the new number by the original number
97 - 423 = -326
-326 ÷ 423 = -0.7706855791962175
-0.7706855791962175 x 100 = -77.07%