-14.79% is the change from 257 to 219
Calculation steps:
[( 219 - 257 ) ÷ 257] x 100 = -14.79%
Formula
Percentage change = [(219 - 257) / 257] x 100
Subtract the new number by the original number
219 - 257 = -38
-38 ÷ 257 = -0.14785992217898833
-0.14785992217898833 x 100 = -14.79%