-22.75% is the change from 545 to 421
Calculation steps:
[( 421 - 545 ) ÷ 545] x 100 = -22.75%
Formula
Percentage change = [(421 - 545) / 545] x 100
Subtract the new number by the original number
421 - 545 = -124
-124 ÷ 545 = -0.22752293577981653
-0.22752293577981653 x 100 = -22.75%