-36.42% is the change from 670 to 426
Calculation steps:
[( 426 - 670 ) ÷ 670] x 100 = -36.42%
Formula
Percentage change = [(426 - 670) / 670] x 100
Subtract the new number by the original number
426 - 670 = -244
-244 ÷ 670 = -0.3641791044776119
-0.3641791044776119 x 100 = -36.42%