-47.74% is the change from 974 to 509
Calculation steps:
[( 509 - 974 ) ÷ 974] x 100 = -47.74%
Formula
Percentage change = [(509 - 974) / 974] x 100
Subtract the new number by the original number
509 - 974 = -465
-465 ÷ 974 = -0.47741273100616016
-0.47741273100616016 x 100 = -47.74%