-97.8% is the change from 546 to 12
Calculation steps:
[( 12 - 546 ) ÷ 546] x 100 = -97.8%
Formula
Percentage change = [(12 - 546) / 546] x 100
Subtract the new number by the original number
12 - 546 = -534
-534 ÷ 546 = -0.978021978021978
-0.978021978021978 x 100 = -97.8%