-98.46% is the change from 973 to 15
Calculation steps:
[( 15 - 973 ) ÷ 973] x 100 = -98.46%
Formula
Percentage change = [(15 - 973) / 973] x 100
Subtract the new number by the original number
15 - 973 = -958
-958 ÷ 973 = -0.9845837615621789
-0.9845837615621789 x 100 = -98.46%