-49.04% is the change from 938 to 478
Calculation steps:
[( 478 - 938 ) ÷ 938] x 100 = -49.04%
Formula
Percentage change = [(478 - 938) / 938] x 100
Subtract the new number by the original number
478 - 938 = -460
-460 ÷ 938 = -0.4904051172707889
-0.4904051172707889 x 100 = -49.04%