-63.6% is the change from 706 to 257
Calculation steps:
[( 257 - 706 ) ÷ 706] x 100 = -63.6%
Formula
Percentage change = [(257 - 706) / 706] x 100
Subtract the new number by the original number
257 - 706 = -449
-449 ÷ 706 = -0.6359773371104815
-0.6359773371104815 x 100 = -63.6%