-35.18% is the change from 850 to 551
Calculation steps:
[( 551 - 850 ) ÷ 850] x 100 = -35.18%
Formula
Percentage change = [(551 - 850) / 850] x 100
Subtract the new number by the original number
551 - 850 = -299
-299 ÷ 850 = -0.3517647058823529
-0.3517647058823529 x 100 = -35.18%