-98.34% is the change from 902 to 15
Calculation steps:
[( 15 - 902 ) ÷ 902] x 100 = -98.34%
Formula
Percentage change = [(15 - 902) / 902] x 100
Subtract the new number by the original number
15 - 902 = -887
-887 ÷ 902 = -0.983370288248337
-0.983370288248337 x 100 = -98.34%