-98.4% is the change from 938 to 15
Calculation steps:
[( 15 - 938 ) ÷ 938] x 100 = -98.4%
Formula
Percentage change = [(15 - 938) / 938] x 100
Subtract the new number by the original number
15 - 938 = -923
-923 ÷ 938 = -0.9840085287846482
-0.9840085287846482 x 100 = -98.4%