-13.51% is the change from 970 to 839
Calculation steps:
[( 839 - 970 ) ÷ 970] x 100 = -13.51%
Formula
Percentage change = [(839 - 970) / 970] x 100
Subtract the new number by the original number
839 - 970 = -131
-131 ÷ 970 = -0.13505154639175257
-0.13505154639175257 x 100 = -13.51%