-57.16% is the change from 670 to 287
Calculation steps:
[( 287 - 670 ) ÷ 670] x 100 = -57.16%
Formula
Percentage change = [(287 - 670) / 670] x 100
Subtract the new number by the original number
287 - 670 = -383
-383 ÷ 670 = -0.5716417910447761
-0.5716417910447761 x 100 = -57.16%