-73.3% is the change from 543 to 145
Calculation steps:
[( 145 - 543 ) ÷ 543] x 100 = -73.3%
Formula
Percentage change = [(145 - 543) / 543] x 100
Subtract the new number by the original number
145 - 543 = -398
-398 ÷ 543 = -0.7329650092081031
-0.7329650092081031 x 100 = -73.3%