-41.94% is the change from 930 to 540
Calculation steps:
[( 540 - 930 ) ÷ 930] x 100 = -41.94%
Formula
Percentage change = [(540 - 930) / 930] x 100
Subtract the new number by the original number
540 - 930 = -390
-390 ÷ 930 = -0.41935483870967744
-0.41935483870967744 x 100 = -41.94%