-54.05% is the change from 111 to 51
Calculation steps:
[( 51 - 111 ) ÷ 111] x 100 = -54.05%
Formula
Percentage change = [(51 - 111) / 111] x 100
Subtract the new number by the original number
51 - 111 = -60
-60 ÷ 111 = -0.5405405405405406
-0.5405405405405406 x 100 = -54.05%