-55.3% is the change from 971 to 434
Calculation steps:
[( 434 - 971 ) ÷ 971] x 100 = -55.3%
Formula
Percentage change = [(434 - 971) / 971] x 100
Subtract the new number by the original number
434 - 971 = -537
-537 ÷ 971 = -0.553038105046344
-0.553038105046344 x 100 = -55.3%