-96.49% is the change from 542 to 19
Calculation steps:
[( 19 - 542 ) ÷ 542] x 100 = -96.49%
Formula
Percentage change = [(19 - 542) / 542] x 100
Subtract the new number by the original number
19 - 542 = -523
-523 ÷ 542 = -0.9649446494464945
-0.9649446494464945 x 100 = -96.49%