-77.16% is the change from 670 to 153
Calculation steps:
[( 153 - 670 ) ÷ 670] x 100 = -77.16%
Formula
Percentage change = [(153 - 670) / 670] x 100
Subtract the new number by the original number
153 - 670 = -517
-517 ÷ 670 = -0.7716417910447761
-0.7716417910447761 x 100 = -77.16%