-78.92% is the change from 664 to 140
Calculation steps:
[( 140 - 664 ) ÷ 664] x 100 = -78.92%
Formula
Percentage change = [(140 - 664) / 664] x 100
Subtract the new number by the original number
140 - 664 = -524
-524 ÷ 664 = -0.7891566265060241
-0.7891566265060241 x 100 = -78.92%