-77.56% is the change from 664 to 149
Calculation steps:
[( 149 - 664 ) ÷ 664] x 100 = -77.56%
Formula
Percentage change = [(149 - 664) / 664] x 100
Subtract the new number by the original number
149 - 664 = -515
-515 ÷ 664 = -0.7756024096385542
-0.7756024096385542 x 100 = -77.56%