-5.67% is the change from 970 to 915
Calculation steps:
[( 915 - 970 ) ÷ 970] x 100 = -5.67%
Formula
Percentage change = [(915 - 970) / 970] x 100
Subtract the new number by the original number
915 - 970 = -55
-55 ÷ 970 = -0.05670103092783505
-0.05670103092783505 x 100 = -5.67%