-98.33% is the change from 897 to 15
Calculation steps:
[( 15 - 897 ) ÷ 897] x 100 = -98.33%
Formula
Percentage change = [(15 - 897) / 897] x 100
Subtract the new number by the original number
15 - 897 = -882
-882 ÷ 897 = -0.9832775919732442
-0.9832775919732442 x 100 = -98.33%