-72.09% is the change from 670 to 187
Calculation steps:
[( 187 - 670 ) ÷ 670] x 100 = -72.09%
Formula
Percentage change = [(187 - 670) / 670] x 100
Subtract the new number by the original number
187 - 670 = -483
-483 ÷ 670 = -0.7208955223880597
-0.7208955223880597 x 100 = -72.09%