-6.29% is the change from 970 to 909
Calculation steps:
[( 909 - 970 ) ÷ 970] x 100 = -6.29%
Formula
Percentage change = [(909 - 970) / 970] x 100
Subtract the new number by the original number
909 - 970 = -61
-61 ÷ 970 = -0.06288659793814433
-0.06288659793814433 x 100 = -6.29%