-31.48% is the change from 969 to 664
Calculation steps:
[( 664 - 969 ) ÷ 969] x 100 = -31.48%
Formula
Percentage change = [(664 - 969) / 969] x 100
Subtract the new number by the original number
664 - 969 = -305
-305 ÷ 969 = -0.31475748194014447
-0.31475748194014447 x 100 = -31.48%