341.11% is the change from 90 to 397
Calculation steps:
[( 397 - 90 ) ÷ 90] x 100 = 341.11%
Formula
Percentage change = [(397 - 90) / 90] x 100
Subtract the new number by the original number
397 - 90 = 307
307 ÷ 90 = 3.411111111111111
3.411111111111111 x 100 = 341.11%