-41.04% is the change from 670 to 395
Calculation steps:
[( 395 - 670 ) ÷ 670] x 100 = -41.04%
Formula
Percentage change = [(395 - 670) / 670] x 100
Subtract the new number by the original number
395 - 670 = -275
-275 ÷ 670 = -0.41044776119402987
-0.41044776119402987 x 100 = -41.04%