156.8% is the change from 331 to 850
Calculation steps:
[( 850 - 331 ) ÷ 331] x 100 = 156.8%
Formula
Percentage change = [(850 - 331) / 331] x 100
Subtract the new number by the original number
850 - 331 = 519
519 ÷ 331 = 1.56797583081571
1.56797583081571 x 100 = 156.8%