-26.85% is the change from 257 to 188
Calculation steps:
[( 188 - 257 ) ÷ 257] x 100 = -26.85%
Formula
Percentage change = [(188 - 257) / 257] x 100
Subtract the new number by the original number
188 - 257 = -69
-69 ÷ 257 = -0.26848249027237353
-0.26848249027237353 x 100 = -26.85%