-57.31% is the change from 670 to 286
Calculation steps:
[( 286 - 670 ) ÷ 670] x 100 = -57.31%
Formula
Percentage change = [(286 - 670) / 670] x 100
Subtract the new number by the original number
286 - 670 = -384
-384 ÷ 670 = -0.573134328358209
-0.573134328358209 x 100 = -57.31%