-98.15% is the change from 972 to 18
Calculation steps:
[( 18 - 972 ) ÷ 972] x 100 = -98.15%
Formula
Percentage change = [(18 - 972) / 972] x 100
Subtract the new number by the original number
18 - 972 = -954
-954 ÷ 972 = -0.9814814814814815
-0.9814814814814815 x 100 = -98.15%