-65.45% is the change from 55 to 19
Calculation steps:
[( 19 - 55 ) ÷ 55] x 100 = -65.45%
Formula
Percentage change = [(19 - 55) / 55] x 100
Subtract the new number by the original number
19 - 55 = -36
-36 ÷ 55 = -0.6545454545454545
-0.6545454545454545 x 100 = -65.45%