-84.47% is the change from 425 to 66
Calculation steps:
[( 66 - 425 ) ÷ 425] x 100 = -84.47%
Formula
Percentage change = [(66 - 425) / 425] x 100
Subtract the new number by the original number
66 - 425 = -359
-359 ÷ 425 = -0.8447058823529412
-0.8447058823529412 x 100 = -84.47%