-45.54% is the change from 997 to 543
Calculation steps:
[( 543 - 997 ) ÷ 997] x 100 = -45.54%
Formula
Percentage change = [(543 - 997) / 997] x 100
Subtract the new number by the original number
543 - 997 = -454
-454 ÷ 997 = -0.45536609829488467
-0.45536609829488467 x 100 = -45.54%