-14.4% is the change from 257 to 220
Calculation steps:
[( 220 - 257 ) ÷ 257] x 100 = -14.4%
Formula
Percentage change = [(220 - 257) / 257] x 100
Subtract the new number by the original number
220 - 257 = -37
-37 ÷ 257 = -0.14396887159533073
-0.14396887159533073 x 100 = -14.4%