-64.78% is the change from 670 to 236
Calculation steps:
[( 236 - 670 ) ÷ 670] x 100 = -64.78%
Formula
Percentage change = [(236 - 670) / 670] x 100
Subtract the new number by the original number
236 - 670 = -434
-434 ÷ 670 = -0.6477611940298508
-0.6477611940298508 x 100 = -64.78%