-64.47% is the change from 850 to 302
Calculation steps:
[( 302 - 850 ) ÷ 850] x 100 = -64.47%
Formula
Percentage change = [(302 - 850) / 850] x 100
Subtract the new number by the original number
302 - 850 = -548
-548 ÷ 850 = -0.6447058823529411
-0.6447058823529411 x 100 = -64.47%