-87.93% is the change from 547 to 66
Calculation steps:
[( 66 - 547 ) ÷ 547] x 100 = -87.93%
Formula
Percentage change = [(66 - 547) / 547] x 100
Subtract the new number by the original number
66 - 547 = -481
-481 ÷ 547 = -0.8793418647166362
-0.8793418647166362 x 100 = -87.93%