-1.34% is the change from 971 to 958
Calculation steps:
[( 958 - 971 ) ÷ 971] x 100 = -1.34%
Formula
Percentage change = [(958 - 971) / 971] x 100
Subtract the new number by the original number
958 - 971 = -13
-13 ÷ 971 = -0.013388259526261586
-0.013388259526261586 x 100 = -1.34%