-26.36% is the change from 349 to 257
Calculation steps:
[( 257 - 349 ) ÷ 349] x 100 = -26.36%
Formula
Percentage change = [(257 - 349) / 349] x 100
Subtract the new number by the original number
257 - 349 = -92
-92 ÷ 349 = -0.2636103151862464
-0.2636103151862464 x 100 = -26.36%