-66.39% is the change from 970 to 326
Calculation steps:
[( 326 - 970 ) ÷ 970] x 100 = -66.39%
Formula
Percentage change = [(326 - 970) / 970] x 100
Subtract the new number by the original number
326 - 970 = -644
-644 ÷ 970 = -0.6639175257731958
-0.6639175257731958 x 100 = -66.39%