-97.66% is the change from 898 to 21
Calculation steps:
[( 21 - 898 ) ÷ 898] x 100 = -97.66%
Formula
Percentage change = [(21 - 898) / 898] x 100
Subtract the new number by the original number
21 - 898 = -877
-877 ÷ 898 = -0.9766146993318485
-0.9766146993318485 x 100 = -97.66%