-30.5% is the change from 964 to 670
Calculation steps:
[( 670 - 964 ) ÷ 964] x 100 = -30.5%
Formula
Percentage change = [(670 - 964) / 964] x 100
Subtract the new number by the original number
670 - 964 = -294
-294 ÷ 964 = -0.3049792531120332
-0.3049792531120332 x 100 = -30.5%