-71.94% is the change from 670 to 188
Calculation steps:
[( 188 - 670 ) ÷ 670] x 100 = -71.94%
Formula
Percentage change = [(188 - 670) / 670] x 100
Subtract the new number by the original number
188 - 670 = -482
-482 ÷ 670 = -0.7194029850746269
-0.7194029850746269 x 100 = -71.94%