-96.96% is the change from 428 to 13
Calculation steps:
[( 13 - 428 ) ÷ 428] x 100 = -96.96%
Formula
Percentage change = [(13 - 428) / 428] x 100
Subtract the new number by the original number
13 - 428 = -415
-415 ÷ 428 = -0.969626168224299
-0.969626168224299 x 100 = -96.96%