-72.6% is the change from 938 to 257
Calculation steps:
[( 257 - 938 ) ÷ 938] x 100 = -72.6%
Formula
Percentage change = [(257 - 938) / 938] x 100
Subtract the new number by the original number
257 - 938 = -681
-681 ÷ 938 = -0.7260127931769723
-0.7260127931769723 x 100 = -72.6%