-77.34% is the change from 428 to 97
Calculation steps:
[( 97 - 428 ) ÷ 428] x 100 = -77.34%
Formula
Percentage change = [(97 - 428) / 428] x 100
Subtract the new number by the original number
97 - 428 = -331
-331 ÷ 428 = -0.7733644859813084
-0.7733644859813084 x 100 = -77.34%