-45.91% is the change from 257 to 139
Calculation steps:
[( 139 - 257 ) ÷ 257] x 100 = -45.91%
Formula
Percentage change = [(139 - 257) / 257] x 100
Subtract the new number by the original number
139 - 257 = -118
-118 ÷ 257 = -0.4591439688715953
-0.4591439688715953 x 100 = -45.91%