148.4% is the change from 343 to 852
Calculation steps:
[( 852 - 343 ) ÷ 343] x 100 = 148.4%
Formula
Percentage change = [(852 - 343) / 343] x 100
Subtract the new number by the original number
852 - 343 = 509
509 ÷ 343 = 1.4839650145772594
1.4839650145772594 x 100 = 148.4%