-98.61% is the change from 938 to 13
Calculation steps:
[( 13 - 938 ) ÷ 938] x 100 = -98.61%
Formula
Percentage change = [(13 - 938) / 938] x 100
Subtract the new number by the original number
13 - 938 = -925
-925 ÷ 938 = -0.9861407249466951
-0.9861407249466951 x 100 = -98.61%