-99.57% is the change from 938 to 4
Calculation steps:
[( 4 - 938 ) ÷ 938] x 100 = -99.57%
Formula
Percentage change = [(4 - 938) / 938] x 100
Subtract the new number by the original number
4 - 938 = -934
-934 ÷ 938 = -0.9957356076759062
-0.9957356076759062 x 100 = -99.57%