-6.92% is the change from 578 to 538
Calculation steps:
[( 538 - 578 ) ÷ 578] x 100 = -6.92%
Formula
Percentage change = [(538 - 578) / 578] x 100
Subtract the new number by the original number
538 - 578 = -40
-40 ÷ 578 = -0.06920415224913495
-0.06920415224913495 x 100 = -6.92%