-61% is the change from 659 to 257
Calculation steps:
[( 257 - 659 ) ÷ 659] x 100 = -61%
Formula
Percentage change = [(257 - 659) / 659] x 100
Subtract the new number by the original number
257 - 659 = -402
-402 ÷ 659 = -0.6100151745068285
-0.6100151745068285 x 100 = -61%