-98.33% is the change from 898 to 15
Calculation steps:
[( 15 - 898 ) ÷ 898] x 100 = -98.33%
Formula
Percentage change = [(15 - 898) / 898] x 100
Subtract the new number by the original number
15 - 898 = -883
-883 ÷ 898 = -0.9832962138084632
-0.9832962138084632 x 100 = -98.33%