-70.48% is the change from 664 to 196
Calculation steps:
[( 196 - 664 ) ÷ 664] x 100 = -70.48%
Formula
Percentage change = [(196 - 664) / 664] x 100
Subtract the new number by the original number
196 - 664 = -468
-468 ÷ 664 = -0.7048192771084337
-0.7048192771084337 x 100 = -70.48%