-83.17% is the change from 303 to 51
Calculation steps:
[( 51 - 303 ) ÷ 303] x 100 = -83.17%
Formula
Percentage change = [(51 - 303) / 303] x 100
Subtract the new number by the original number
51 - 303 = -252
-252 ÷ 303 = -0.8316831683168316
-0.8316831683168316 x 100 = -83.17%