-89.85% is the change from 542 to 55
Calculation steps:
[( 55 - 542 ) ÷ 542] x 100 = -89.85%
Formula
Percentage change = [(55 - 542) / 542] x 100
Subtract the new number by the original number
55 - 542 = -487
-487 ÷ 542 = -0.8985239852398524
-0.8985239852398524 x 100 = -89.85%