-31.21% is the change from 974 to 670
Calculation steps:
[( 670 - 974 ) ÷ 974] x 100 = -31.21%
Formula
Percentage change = [(670 - 974) / 974] x 100
Subtract the new number by the original number
670 - 974 = -304
-304 ÷ 974 = -0.31211498973305957
-0.31211498973305957 x 100 = -31.21%