-85.64% is the change from 543 to 78
Calculation steps:
[( 78 - 543 ) ÷ 543] x 100 = -85.64%
Formula
Percentage change = [(78 - 543) / 543] x 100
Subtract the new number by the original number
78 - 543 = -465
-465 ÷ 543 = -0.856353591160221
-0.856353591160221 x 100 = -85.64%