283.91% is the change from 87 to 334
Calculation steps:
[( 334 - 87 ) ÷ 87] x 100 = 283.91%
Formula
Percentage change = [(334 - 87) / 87] x 100
Subtract the new number by the original number
334 - 87 = 247
247 ÷ 87 = 2.839080459770115
2.839080459770115 x 100 = 283.91%