172.44% is the change from 312 to 850
Calculation steps:
[( 850 - 312 ) ÷ 312] x 100 = 172.44%
Formula
Percentage change = [(850 - 312) / 312] x 100
Subtract the new number by the original number
850 - 312 = 538
538 ÷ 312 = 1.7243589743589745
1.7243589743589745 x 100 = 172.44%