-2.47% is the change from 971 to 947
Calculation steps:
[( 947 - 971 ) ÷ 971] x 100 = -2.47%
Formula
Percentage change = [(947 - 971) / 971] x 100
Subtract the new number by the original number
947 - 971 = -24
-24 ÷ 971 = -0.024716786817713696
-0.024716786817713696 x 100 = -2.47%