-0.21% is the change from 971 to 969
Calculation steps:
[( 969 - 971 ) ÷ 971] x 100 = -0.21%
Formula
Percentage change = [(969 - 971) / 971] x 100
Subtract the new number by the original number
969 - 971 = -2
-2 ÷ 971 = -0.0020597322348094747
-0.0020597322348094747 x 100 = -0.21%