-64.95% is the change from 970 to 340
Calculation steps:
[( 340 - 970 ) ÷ 970] x 100 = -64.95%
Formula
Percentage change = [(340 - 970) / 970] x 100
Subtract the new number by the original number
340 - 970 = -630
-630 ÷ 970 = -0.6494845360824743
-0.6494845360824743 x 100 = -64.95%