-54.9% is the change from 938 to 423
Calculation steps:
[( 423 - 938 ) ÷ 938] x 100 = -54.9%
Formula
Percentage change = [(423 - 938) / 938] x 100
Subtract the new number by the original number
423 - 938 = -515
-515 ÷ 938 = -0.5490405117270789
-0.5490405117270789 x 100 = -54.9%