-77.43% is the change from 545 to 123
Calculation steps:
[( 123 - 545 ) ÷ 545] x 100 = -77.43%
Formula
Percentage change = [(123 - 545) / 545] x 100
Subtract the new number by the original number
123 - 545 = -422
-422 ÷ 545 = -0.7743119266055046
-0.7743119266055046 x 100 = -77.43%