-98.03% is the change from 915 to 18
Calculation steps:
[( 18 - 915 ) ÷ 915] x 100 = -98.03%
Formula
Percentage change = [(18 - 915) / 915] x 100
Subtract the new number by the original number
18 - 915 = -897
-897 ÷ 915 = -0.980327868852459
-0.980327868852459 x 100 = -98.03%