-32.01% is the change from 378 to 257
Calculation steps:
[( 257 - 378 ) ÷ 378] x 100 = -32.01%
Formula
Percentage change = [(257 - 378) / 378] x 100
Subtract the new number by the original number
257 - 378 = -121
-121 ÷ 378 = -0.3201058201058201
-0.3201058201058201 x 100 = -32.01%