-82.17% is the change from 286 to 51
Calculation steps:
[( 51 - 286 ) ÷ 286] x 100 = -82.17%
Formula
Percentage change = [(51 - 286) / 286] x 100
Subtract the new number by the original number
51 - 286 = -235
-235 ÷ 286 = -0.8216783216783217
-0.8216783216783217 x 100 = -82.17%