-89.17% is the change from 471 to 51
Calculation steps:
[( 51 - 471 ) ÷ 471] x 100 = -89.17%
Formula
Percentage change = [(51 - 471) / 471] x 100
Subtract the new number by the original number
51 - 471 = -420
-420 ÷ 471 = -0.89171974522293
-0.89171974522293 x 100 = -89.17%