-63.34% is the change from 851 to 312
Calculation steps:
[( 312 - 851 ) ÷ 851] x 100 = -63.34%
Formula
Percentage change = [(312 - 851) / 851] x 100
Subtract the new number by the original number
312 - 851 = -539
-539 ÷ 851 = -0.6333725029377203
-0.6333725029377203 x 100 = -63.34%