-82.2% is the change from 545 to 97
Calculation steps:
[( 97 - 545 ) ÷ 545] x 100 = -82.2%
Formula
Percentage change = [(97 - 545) / 545] x 100
Subtract the new number by the original number
97 - 545 = -448
-448 ÷ 545 = -0.8220183486238533
-0.8220183486238533 x 100 = -82.2%