-91.53% is the change from 602 to 51
Calculation steps:
[( 51 - 602 ) ÷ 602] x 100 = -91.53%
Formula
Percentage change = [(51 - 602) / 602] x 100
Subtract the new number by the original number
51 - 602 = -551
-551 ÷ 602 = -0.915282392026578
-0.915282392026578 x 100 = -91.53%