-34.6% is the change from 974 to 637
Calculation steps:
[( 637 - 974 ) ÷ 974] x 100 = -34.6%
Formula
Percentage change = [(637 - 974) / 974] x 100
Subtract the new number by the original number
637 - 974 = -337
-337 ÷ 974 = -0.3459958932238193
-0.3459958932238193 x 100 = -34.6%