-83.11% is the change from 302 to 51
Calculation steps:
[( 51 - 302 ) ÷ 302] x 100 = -83.11%
Formula
Percentage change = [(51 - 302) / 302] x 100
Subtract the new number by the original number
51 - 302 = -251
-251 ÷ 302 = -0.8311258278145696
-0.8311258278145696 x 100 = -83.11%