-97.2% is the change from 428 to 12
Calculation steps:
[( 12 - 428 ) ÷ 428] x 100 = -97.2%
Formula
Percentage change = [(12 - 428) / 428] x 100
Subtract the new number by the original number
12 - 428 = -416
-416 ÷ 428 = -0.9719626168224299
-0.9719626168224299 x 100 = -97.2%