-49.12% is the change from 971 to 494
Calculation steps:
[( 494 - 971 ) ÷ 971] x 100 = -49.12%
Formula
Percentage change = [(494 - 971) / 971] x 100
Subtract the new number by the original number
494 - 971 = -477
-477 ÷ 971 = -0.49124613800205974
-0.49124613800205974 x 100 = -49.12%