-21.4% is the change from 257 to 202
Calculation steps:
[( 202 - 257 ) ÷ 257] x 100 = -21.4%
Formula
Percentage change = [(202 - 257) / 257] x 100
Subtract the new number by the original number
202 - 257 = -55
-55 ÷ 257 = -0.2140077821011673
-0.2140077821011673 x 100 = -21.4%