In the determination of the Young’s modulus of a given wire, the force, length, radius and extension in the wire are measured as (100 ± 0.01) N, (1.25 ± 0.002)m, (0.001 ± 0.00002)m, and (0.01 ± 0.00002)m, respectively. The percentage error in the measurement of Young’s modulus is