-67.47% is the change from 83 to 27
Calculation steps:
[( 27 - 83 ) ÷ 83] x 100 = -67.47%
Formula
Percentage change = [(27 - 83) / 83] x 100
Subtract the new number by the original number
27 - 83 = -56
-56 ÷ 83 = -0.6746987951807228
-0.6746987951807228 x 100 = -67.47%