-89.25% is the change from 670 to 72
Calculation steps:
[( 72 - 670 ) ÷ 670] x 100 = -89.25%
Formula
Percentage change = [(72 - 670) / 670] x 100
Subtract the new number by the original number
72 - 670 = -598
-598 ÷ 670 = -0.8925373134328358
-0.8925373134328358 x 100 = -89.25%