-98.34% is the change from 905 to 15
Calculation steps:
[( 15 - 905 ) ÷ 905] x 100 = -98.34%
Formula
Percentage change = [(15 - 905) / 905] x 100
Subtract the new number by the original number
15 - 905 = -890
-890 ÷ 905 = -0.9834254143646409
-0.9834254143646409 x 100 = -98.34%