-90.96% is the change from 664 to 60
Calculation steps:
[( 60 - 664 ) ÷ 664] x 100 = -90.96%
Formula
Percentage change = [(60 - 664) / 664] x 100
Subtract the new number by the original number
60 - 664 = -604
-604 ÷ 664 = -0.9096385542168675
-0.9096385542168675 x 100 = -90.96%